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Biswing Pressure Washer Pump, 1' Shaft Horizontal Triplex Plunger, 4400 PSI Max, 4 GPM, Direct Drive Pump with Adjustment Unloader, Replacement Pumps for Cold Water Gas Power Pressure Washer

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$179.99

$ 74 .99 $74.99

In Stock

About this item

  • POWERFUL PRESSURE WASHER PUMP: With a working pressure rating of 2900-4400 PSI and flow rate of 4 GPM, fit most engines with 9-15 HP(270-340cc), our pressure washing pump delivers exceptional performance, fits most horizontal 1" shaft gas-powered pressure washers. (ONLY Fit 1'' Shaft Horizontal Engines). Constructed with one-piece brass pump head, this replacement pump ensures consistent and forceful water pressure
  • COMPATIBILITY: Our pressure washer pump features a 3/4'' NH garden hose inlet and 3/8" quick connect high pressure hose outlet, compatible with various gas pressure washers with horizontal engines- compatible with Honda: GX270, GX340, GX390; Simpson MorFlex: 40224, 40225, 40226, 41182, 90034, 90039; AR: RG 2125HN, RG 1528HN, SLPHP4040-402, RSV4G40-PKG, RSV4G40HD-F40EZ; General Pump: EZ4040G, EZ4040, TS2021, WS202; OTHERS: COMET RW 4040 S, Mi-T-M 3-0308
  • ADJUSTABLE POWER UNLOADER: Come with an unloader can be easily adjusted by twisting the unloader valve to let pressure output to the great performance with your engine and great cleaning efficient for your workshop. When you need the engine to switch to idle mode, just lower the pressure to reduce the noise and relax for a while
  • CHANGE OIL IN TIME: The sight glass and advanced oil seal technology eliminates the need for a dipstick, you can know oil levels are low or if water has clouded the oil through sight glass, very easy to change the oil in time. Tips- The pump does NOT contain pre-filled oil, please add oil before use. The oil should be changed about EVERY 60 hours of operation
  • PACKAGE INCLUDE: 1x Power Washer Replacement Pump, 1 x Detergent Hose, 1 x Vent Plug, 1 x Shaft Key (6.3 x 6 x 54), 4 x Bolts (UNC3/8-16 x 1-1/2), 4 x D10 Spring Washers, 4 x D10 Flat Pads, 21 x O-rings. Notes- In order to protect the spring, the pressure is not set to the maximum value at the factory, please adjust the pressure with the regulator. Only suitable for COLD WATER use



Product Description

Biswing Pressure Washer Pump, 1" Shaft

Biswing 1" Shaft Horizontal Pressure Washer Pump

Biswing Pressure Washer Pump, 1" Shaft

Specification

Max Pressure (psi/bar) 4400 PSI
Engine Horsepower 9-15 HP
Max Flow Rate 4 GPM
Shaft 1 INCH
Orientation Horizontal
Rated RPM 3400 RPM
Connector Inlet 3/4''NH Garden Hose
Connector Outlet 3/8'' Quick Connect
pump

CAUTION

1. ONLY Fit 1'' Shaft Horizontal Engines.

2. With a 3/8" quick plug, if it is not suitable for the connector of your PRESSURE WASHER HOSE, please purchase the adapter coupler connection separately.

3. The pump does NOT contain pre-filled oil, please add oil before use.

4. The oil should be changed about EVERY 60 hours of operation.

5. In order to protect the spring, the pressure is not set to the maximum value at the factory, please adjust the pressure with the regulator.

6. Only suitable for COLD WATER use.

Biswing Pressure Washer Pump, 1" Shaft

Jose Rosario
2025-07-24 12:58:47
Replace a broken pump with this one, it works very well ! 👍🏻
johnny gassett
2025-07-14 17:11:02
Has good pressure
Mario Alan
2025-06-21 15:34:44
Installed it onto my GX270 engine.The seller says the on loader is set to the lowest setting which was not. Also said no prefilled oil is in the pump, but the box came covered in oil like if it spilled, inside another box, so the pump was oily. Also the 3/8 connector was dented from factory so I had to replace that part as well, which I don’t know if the seller cared or not. I’ve only tried the pump once and it worked great, but just be aware.
Robert E. Dangate
2025-06-01 16:03:25
item recieved 11/4/24 fast delivery thank you sir,
Charles Herman
2025-05-29 12:08:12
Was very easy to install
Kevin
2025-05-03 10:36:34
Perfect fit and works well.
Brian Fridley
2025-04-06 13:14:36
I gave this 3 stars only because it was a breeze to assemble.The water outlet would not accept my pressure washing hoses. It almost seemed like the outlet was out of round. I thought no big deal. I have a bunch of new fittings since I do this professionally. Well, because of the design, you can not change out the outlet fitting. I will be returning this pump and try another brand
Sat Kiwi
2025-01-17 18:41:40
Running great , used for 10 hours and zero problems
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